78152260851227 has 4 divisors (see below), whose sum is σ = 78227916477480. Its totient is φ = 78076605224976.

The previous prime is 78152260851211. The next prime is 78152260851253. The reversal of 78152260851227 is 72215806225187.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78152260851227 - 2⁴ = 78152260851211 is a prime.

It is a super-2 number, since 2×78152260851227² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78152260811227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37827811577 + ... + 37827813642.

It is an arithmetic number, because the mean of its divisors is an integer number (19556979119370).

Almost surely, 2^{78152260851227} is an apocalyptic number.

78152260851227 is a deficient number, since it is larger than the sum of its proper divisors (75655626253).

78152260851227 is a wasteful number, since it uses less digits than its factorization.

78152260851227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75655626252.

The product of its (nonzero) digits is 7526400, while the sum is 56.

The spelling of 78152260851227 in words is "seventy-eight trillion, one hundred fifty-two billion, two hundred sixty million, eight hundred fifty-one thousand, two hundred twenty-seven".